工作像一个子? 沉重的负载对子造成的生理损失
Tamara Tadich1, Javiera Calderón-Amor2, Igor González3
1Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile.
Frontiers in veterinary science
|December 18, 2025
概括
携带超过105公斤的负载的劳动子表现出生理应激反应,包括皮质醇和乳酸的升高,但很快恢复. 这些发现凸显了基于证据的工作负载限制的必要性,以确保在苛刻的任务中确保子的福利.
科学领域:
- 兽医生理学 兽医生理学
- 动物科学动物科学
- 马群福利 马群福利 马群福利
背景情况:
- 劳动子对全球人类的生计至关重要.
- 关于子在承载任务时的生理极限,科学数据有限.
- 了解这些限制对于确保动物福利和优化性能至关重要.
研究的目的:
- 为了研究工作对在短距离工作中增加负载的生理反应.
- 评估不同体重负载百分比对关键生理和生化参数的影响.
- 为了确定子的体型是否会影响它们对运动的生理反应.
主要方法:
- 一个交叉研究设计,涉及12只不同大小的智利陆军子.
- 子在热的环境温度 (32-39°C) 中携带0,80,105和130公斤 (20-42%的体重) 的负载进行了2公里的步行.
- 在运动前和运动后的多个时间点测量了生理和血液参数,生物化学分析持续了长达105小时.
主要成果:
- 增加负载显著增加皮质醇,乳酸和直肠温度,表明压力和无氧代谢.
- 酶活动 (GGT,LDH,SAP/ALP) 随着重负荷的增加而增加,这表明肌肉的努力和组织的压力.
- 虽然心脏和呼吸速率保持稳定,表明心血管适应,但像谷氨过氧化酶 (GPx) 这样的参数下降,这意味着氧化需求增加.
结论:
- 负载超过105公斤的短距离工作会在适应性范围内激活受过训练的子的生理应激反应.
- 更重的负载需要更大的代谢和酶调整,这强调了工作负载管理对子福利的重要性.
- 建立基于证据的工作负载门对于平衡工作的绩效和福利至关重要,未来需要对长期工作和现场条件进行研究.
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